Pricking out toms

Having given this a little more thought.............with tomatoes, courgettes, cucumbers, I sow 2 seeds in a module and bung them in the propagator. The module size depends on the size of the seedling I hope to grow. Tom modules are smaller than courgette modules. I prefer 4, 6 or 9 joined modules to the 24ish ones as they're easier to handle and you don't have to whip all of them out of the prop when only a few show life.
If both seeds in a module germinate and look healthy, I may remove one and replant it, but, generally, there's enough room in the module for the seedling to grow without needing immediate transplanting. Puny seedlings, sharing a module are pulled up or snipped off.